The man page for epoll_ctl lists an event flag, EPOLLRDHUP, functionally analogous to POLLRDHUP, used to detect a peer shutdown. However, <sys/epoll.h> does not define that symbol. (FC 6, BTW)
The question is, which one's right? Is the symbol simply missing from epoll.h, but all other aspects of the implementation are in place? Or is epoll.h correct, and the man page incorrectly states that the flag should exist?
Phrased differently, should a bug be filed against glibc-headers or man-pages?